Incandescent gas-lamp.



L. M. RUBIN.

INGANDESGENT GAS LAMP.

APPLICATION FILED D20. 26. 1912.

1,077,756, Patented Nov. 4, 1913.

l 2 VSHEETS-SHEET 1.

INVENTOR MkM M WITNESSES W I I IUTORNEY' COLUMBIA PMNOGRAPH co L. M. RUBIN.

INOANDESGENT GAS LAMP.

APPLICATION FILED DEC. 26, 1912.

1,077,756. Patented Nov. 4, 1913.

2 SHEBTSSHEET 2.

INVENTOR WITNESSES ZZZZ I A TTOR/VEY COLUMBIA PLANOGRAPH CO.,WASHINGTON. D. 1:.

LOUIS M. RUBIN, OF NEW YORK, N. Y.

INCANDESCENT GAS-LAMP.

To all whom it may concern:

Be it known that I, LOUIS M. RUBIN, a

subject of the Czar of Russia, residing in the city of New York, county and State of New York, have invented certain new and useful Improvements in Incandescent Gas- Larnps, of which the following is such a full, clear, and exact description as will enable any one skilled in the art to which it appertains to make and use the same, reference being had to the accompanyingdrawings, forming part of this specification.

My invention relates to what is known as incandescent gas lamps, and it has more particular reference to such a lamp in which multiple burners of the inverted type are used.

The invention resides in the various novel and peculiar arrangements and combinations of the different parts of the apparatus, all as hereinafter fully set forth and then pointed out in the claims.

I have illustrated a type of my invention in the accompanying drawings, wherein:

Figure 1 is a view of my improved lamp with the chimney, the globe-holder, the globe and the heat-bell shown in central vertical section. of the lower part of the lamp shown in central vertical section. Fig. 3 is a horizontal sectional View taken on the plane indicated by the line 33 in Fig. 2.

Referring to the drawings in which like numbers of reference designate like parts throughout, 1 is the gas supply pipe the lower end of which is screwed into a threaded socket 2, upon the upper side of the pipe-fitting 3, which is also provided with a lateral socket 4, having an internal thread into which is screwed the end of the lateral gas-pipe 5, the passage for the gas being from the pipe 1, through the fitting 3, and thence into the pipe 5. This peculiar fitting 3, is provided with a well or catchall 6, directly below the socket 2, and this catch-all is tapped by a hole 7, running diagonally into the bottom of the same and the hole 7, is closed by a removable screwplug 8.

The lower end of the fitting 3, is provided with a solid stem 9, which serves both as a support and a connection with the burnerpipe hereinafter referred to. The fitting 3, is also provided with a solid extension or boss 10, which extends outwardly from Specification of Letters Patent.

Application filed December 26, 1912.

Fig. 2 is an enlarged view Patented Nov. 4, 1913.

Serial No. 738,733.

the side of the fitting at a point opposite that where the socket 4, is located. This boss 10, serves as an attaching point for the supporting screw 11, which extends through the side of the lamp-chimney 12.

The head of the screw 11, is countersunk at 13, in the side of the chimney and a cover-plate 14, is secured over the depression. Both the stem 9, and the boss 10,

are preferably made integral with the fitting 3, and they give firm points of attachment for the respective parts connected therewith. 7

Upon the side of the socket 4, of the fitting 3, is formed or cast a part 15, through which extends a small duct 16, leading from the interior of the fitting 3, and terminating upon the under side of the part 15, and at which point it is connected with a small tube 17, for the pilot-light which extends down to a point near the burner in the usual way. A screw 17*, is let into the duct 16, and serves to regulate the quantity of gas admitted to the pilot-pipe.

Upon the outside of the chimney 12, is located a valvecasing 18, which has a central duct 19, the upper end of which is closed by a removable plug 20, which may be removed for the purpose of cleaning the duct. A gascock 21 is mounted in the valve-casing and controls the passage 19, thereof, the gas-supply pipe or duct 5, being connected with the valve-casing 15 by a threaded joint, and being in communication with the passage 19, of the casing. To the outer end of the gas-cock 21, is attached by means of a screw 22, a bracket 23, having oppositely extending arms 24 and 25, to which are attached the pull-chains 26 and '27, respectively, for turning on and off the gas.

The tubular extension 28 from the valvecasing '18, and through which the gas-cock extends, is provided with an internal screwthread into which takes an external thread 29, on a sleeve or nut 30. Between the inner end of the sleeve 30, and a shoulder 31, on the gas-cock is interposed a coiled spring 32, and when the sleeve 30, is screwed down it presses the spring against the shoulder and thereby keeps the said gas-cock seated under spring tension. The angular or rotary movement of the gas-cock is limited to about 45 by means of a screw threaded pin 33,

which projects laterally from the side of he gascock, and a slot 34, formed in the side of the tubular extension 28, of the valvecasing.

The needle-valve 35, is mounted in the valve casing 18, below the gas-cock, and the stem of this valve is provided with an external thread 36, which works in the threaded perforation 37 in the valve-casing. A. nut 38, is mounted on the thread 36 of the needle-valve stem and serves to lock the needle-valve in adjusted position. Vhen the valve has been set in its proper position by turning it one way or the other, the nut 38, is turned down hard against the side of the valve-casing and thus serves to lock the needle valve in place.

The valve seat 39, of the needle valve of the bunsen is formed in a part 40, which is screwed into the side of the valve-casing 18, as indicated. This part 40, is provided with an external thread 41, which receives an internal thread on the end of the mixingchamber 42 of the bunsen. The other end of the cylindrical mixing-chamber 42, fits over the exterior of a sleeve or nut 43, and makes a sliding-joint therewith, at the same time making a snug fit. This nut 43, is screwed on to the thread on the exterior of the end 44, of the burner-pipe 45, which passes through a hole 46, in the side of the chimney 12, making a tight fit with the same. The burner-pipe 45, is provided with a shoulder 47, which rests against the inner side of the chimney 12, and the nut 43, is screwed down tight against the outside of the chimney thus clamping the latter securely to the burner-pipe. The sliding-joint between the mixing-chamber 42 and the exterior of the sleeve 43, is made sufliciently long to permit the chamber 42, to be unscrewed from the thread 41 on the part 40 and slipped away from the same in order to remove the chamber 42. When the chamber 42, is unscrewed and slipped away from the part 40, the latter may then be unscrewed and removed.

The rotary shutter 48, mounted on the exterior of the chamber 42, is provided with a series of openings 49, which register with the openings 50 in the chamber, and the quantity of air admitted to the chamber is regulated by adjusting the shutter on its axis in the usual Way. The shutter is retained in place and permitted to be rotated by means of a screw 51 which is set in the side of the chamber 42, and between two of the perforations 50, therein. A slot 52, is formed between two of the perforations 49, in the shutter and this gives a sufficient rotary movement to the shutter to adjust its openings as desired. When the screw is tightened in place it clamps the shutter in adjusted position. The screw 51, being thus located holds the shutter from endwise movement, and it is also so positioned that the lower end of the screw should it pierce the chamber 42, is kept out of reach of the end of the sleeve 43, of the sliding joint.

The burner-pipe 45, after passing through the chimney 12, curves downwardly to a central point within the chimney 12, and to its lower end is screwed the burner-head 68, which is provided with four nipples 69, each carrying a refractory burner '70, on which ordinary incandescent inverted manties 71, are mounted. The burner-pipe 45, is made in one piece with the solid stem 9, to the upper end of which is rigidly secured the fitting 3, and this provides a very strong connection. The interior of the burner-pipe 45, instead of being of uniform diameter is expanded at the point 75, or in other words, the burner-pipe is contracted at its upper and lower ends, and this provides an expansion-chamber within this pipe for the mixture to pass into. The same formation is found in each of the burner-nipples 69, in which the interior is expanded at 73. By virtue of these enlargements in the burner-pipe and the nipples. I find that a better Bunsen flame is obtained as compared with similar parts having uniform interior diameters.

Across the upper end of the chimney 12, is secured brace-piece having central opening 54, through which extends the lower end of a collar 55, which is mounted on the supply-pipe and is provided with a setscrew 56, for clamping the collar to the pipe. This affords both lateral and vertical support to the parts. Above the chimney is placed an ordinary heat-bell 57, having a central perforation 58, through which passes the supply pipe 1. The exterior pipe 1, is screw-threaded at and on this thread is a nut 60, which supports the heat-bell 57, a washer 61, being interposed between the bell and the nut. Above the heat-bell and on the pipe 1, is a threaded sleeve 62, which works on the thread 59, of the pipe and when the sleeve is screwed down it clamps the heat-bell securely in place against the nut 60.

Upon the lower end of the chimney is mounted an annular hood 63, provided with ventilating openings 64, and to the lower end of the hood 63, is removably attached an ordinary glass globe 64, for inclosing the burners.

It will be noted that the pilot-light pipe 17, is supplied directly from the supplypipe and at a point a considerable distance from the valve-casing 18. This prevents the pilot-light from being extinguished by the sudden operation of the gascock, as is the case where the pilot-light pipe gets its supply at a point near the valve-casing or from the valve-casing itself. This arrangement also permits the use of a shorter piece of pipe for the pilot, and it also enables the complete pilot attachment to be placed Within the chimney of the lamp. The screwvalve 17 of the pilot-light, however, has its head extended through an opening in the chimney of the casing so as to be accessible from the exterior of the same for the purpose of adjusting this valve.

l laving thus described my invention, what I claim and desire to secure by Letters Patent, is:

1. In a gas lamp, the combination of a gas supply-pipe, a burner and a burner-pipe, a valve-casing connected with said gas supply-pipe and said burner-pipe, a bunsen located in said connection between said burnerpipe and valve-casin an injector-nozzle having a valve seat therein and being secured to said valve-casing by means of a threaded joint and provided upon its exterior with a thread, a l'lLQtll6-Y21IX'6 operating in said nozzle, a tubular mixing-chan'iber provided with a thread for engaging said thread on the injectonnozzle, the other end ct said mixing-chamber having a sliding joint on said burner-pipe and capable of sliding thereon when unscrewed from said injector-nozzle whereby it may be dismounted without manipnlating the burnerpipe, substantially as described.

In a gas lamp, the combination oi a gas supply pipe, a valve-casing connected with said gas supply pipe and provided with a valve, a burner, a substantially arc-shaped burner-pipe connected with said burner and with said valve-casing and having its interior formed with an enlargen'icnt gradu ally tapering toward each end of the pipe, sul'istantially as and for the purpose set forth.

3. In a gas lamp, the combination of a gas supply pipe, a vahe-casing provided with a valve controlling the flow of gas to the burner, a fitting connected with said supply pipe and provided with a laterally extending socket, a pipe connecting said lateral socket with said valve casing, the said lateral socket of the fitting being provided With a horizontally extending enlargement formed with a duct leading from the interior of the socket and provided with a screwvalve regulating the flow through said duct, and a pilot-light tube leading from said duct to the burner, substantially as and for the purpose set forth.

4. In a gas lamp, the con'ibination ot a gas supply pipe, a burner and a burner-pipe, a valve-casing connected with said gas supply-pipe and said burner-pipe, a bunsen located in said connection between said burnerpipe and valve-casing and having a tubular l'i'iixing-chamber provided with a screwthreaded joint at one end and a sliding-joint at the other, said sliding-joint including an internally threaded sleeve mounted on the threaded end of said burner-pipe, a chimney through which said burner pipe extends and an abutment on said burner-pipe against which the inner side of the chimney rests, said threaded sleeve of the sliding-joint taliing against the exterior of said chimney and serving to clamp it against the abutment on the burner'pipe.

In a gas lamp, the con'ibination ot a gas supply-pipe, a burner and a burner-pipe, a valvecasing connected with said gas supply-pipe and said burner-pipe, a bunsen located in said connection between said burner-pipe and valve-casing and having a mixing-chamber provided with a rotatable tubular shutter formed with a series of peripheral openings for admitting air to said chamber, a peripheral slot connecting two of said sluitter-openings, and a set-screw lo cated in said slot and mounted in said chamber for holding the shutter in adjusted posi' tion.

In witness whereof, I have hereunto set my hand in the presence of the subscribing witnesses.

LOUIS M. RUBIN.

'itnesses \V1LL1s FOWLER, HARRY I. PICKETT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

